Wind and weather screen for motorcycles



A. G. CAMPBELL.

WIND'ANO WEATHER SCREEN FOR MOTORCYCLES.

APPLICATION FILED DEC. 31, 1919.

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' ATTORNEY A. e.- CAMPBELL. WIND AND WEATHER SCREEN FOR MOTORCYCLES.

APPLICATION FILED DEC.31| I919.

Patented Aug. 9, 1921.

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UNITED, erares [#ATENT ,OFFICE.

ARcHi ALn-eownN CAMPBELL, or RICHMOND, ENGLAND.

- WIND AND WEATHER SCREEN FOR Mo'roRcYcnns.

To aZZw/wmitmay concern: Be it knownv that I, ARcHIBALD Britain and Ireland, andjresiding at Asgard, The Green, 'RIClImOIICl, Surrey, Eng land, have invented certain new'and useful Improvements in Wind and lVeather Screens for Motorcycles, of which the following is a specificatio i This invention, relates ton-a detachable wind screen for motor cycles and has forits object to provide a convenient, light and easily detachable screen for the protection of the face and body of motor cyclists.

The invention consists in a wind and weather screen for the protection of the face.v

and body of the rider of a motor cycle, the screen being pivotally supported on a transverse axis in tlieregionof, the handle bars of the motor cycle, and whilenormally constrained in its rocking movement about this axis yet is capable ofbeing partially rotated forward out of the'riders way when desired.

The invention also consistsiin a wind and weather screen as ndlcated above in which means are provided normally to restrain the screen in two or imore alternative positions and also to allow of a limited andrestrained rocking movement for the purpose of ab sorbing road shocks and vibration. V

Theinvention alsoconsists in the wind and weather screens herein described.

Referring to the accompanyingsketches, Figure '1 represents a perspective view of. a

convenient arrangement according to the present invention. Fig. Zis a sectional view of the strutindicated in Fig. '1. Figs. 3'and 4 are sectional and elevational views respectively of the strut slide fitting indicated in Fig. .1. I

' .In carrying the invention intoefi'ect in one form illustrated. by way of example in Fig. 1, the screen a is supported and pivoted at or near its loweredge von a transverse axison the handlejbarswof the motor cycle..- The supporting axis is'shown as taking" theform" of a roundfltube c fixed across the flexible joint or hinge to the center of the handle bar by suitable clips just in front of the handle grips thereof.

The screen is free torock about its axis but is held in position by a stint the upper end of which d is attached by means of a screen, while the lower part f of the strut slides through a fitting 9 attached to the r Specificationof Letters Patent! Patented Aug, 9, 1921. Application filed December v31, 1919. Serial H0. 348,671.

front portion of the handle bar and is held GOWAN CAMPBELL, a, subject of the King of Great spring h is such that any considerable forr wardpressure on the screen could release the, notch from engagement with the fitting g and allow the strut to slide forward and downward through the fitting g, the screen partially rotating forward about its axis.

The stop limits the forward movement of the strut anda second notch securesthe latter in position. The pressure necessary to produce this forward motion would be intentionally applied by the rider of the motor cycle ifchenwished to push the screen well clear of hisiface and body for any reason, for example, for the purpose J of making a running mount, the screen being subsequently pulled back by him into its normal position. and retained there bythe lower notch j as explained above. 7

It would similarly be pushed forward out of his way in the case ofhis being-thrown against it by a violent: jolt or in an accident.

= In the form illustrated the two parts f and d of the strut. are resiliently interconnected, the upper part d being of rod form and provided with a'plunger 7c, sliding preferably with a certain amount of friction within the tubular part Z. I

Two compression springs"m-m bear re-- spectively on opposite sides against this plunger, and are retained'within the tube Z byaretaining cap n. By this means it will be seen that'the screen is 'notzonly capable of, being partially rotated about its axis as above while the strut slides from one position ornotch to another, but itis also capab-le of. a similar but smaller rocking movement for the purpose of absorbing road T shocks or vibration, the'spring buffer permittingof a limited longitudinal extension or contraction of the strut, with a corresponding limited rocking movement of the screen aboutits axis.

The flexible connection at the top of the strut need not be made exactly opposite the point at which the fitting g is attached to the lowing for an eccentric or lateral displace ment of the lower portion of the strut.

In the form illustrated the strut is shown as provided with two'notches only but if desired it may be provided with ser eral notches, stops or the like which permit of the wind screen being fixed in severalalternative positions.

flor convenience ofportabilityan'd 'adjustment, the screen is HL'IClJOf two light wooden, metal or equivalent frames 0 so hinged together horizontally that the upper part is capable of being folded back.v

T he upper frame 0 isiilled with sheet eelluloid or othersuitable transparent material 2) and the lower part may be filled with similar or other suitable material. i

The top portion is preferably made with the upper end ofthe transparent material itself forming the upper edge of the screen;

In the case of the form of folding screen 1 shown the top edge of the strut is attached by this. flexible joint or hinge to'the front of the lower franie,.a suitable point of attachment being the center oft-the upper side of the frame just below the division between thetwo frames as shown in Fig.1 1;

In normal use the screen is adjusted at such a height andiangle that the rider of the motorcycle is just able to see comfortably over its top edge, and at sucha distance from his face (say about 8 or. 1") that he obtains the maximum protection from air currents compatible with his uninterrupted view of the road' In practice a width ofabout 16' filllCllfi. height of about 1257 and 10 respec tively for the lower and upper portions of 1 the screen has been found satisfactory; and," in the caseuof a. folding screen, the lower portion may slope backward at an angle of about 15 with the'vertical, and upper part be approximately: vertical when the screenis inits normal position. In wet weather the. adjustable folding screen may be arranged to give additional protection to the face and neck of the :riderby using it with the lower part sloped slightlyforwardand the relative angle of the upper! part re-adjusted and clamped to bring the latter once more into an approximately vertical position.

The" rider will then be enabled to, bend forward so as to bring his head more fully under the protection of the screen and will view the roadtlirough the transparent material of the upper .portionwhilestill retaining the option of sitting up and looking'iover its top edgeif necessary.

. The hearings or clips g( by which the screen rocks on its a supporting axis are divided and clamped together about the tube 0 by means of wing nuts 7 wherebythe screen may readily be attached to or removed from the handle bars and att-he same time friction of the screen can be adjusted to allowgreater orless freedomof rocking vii'iovement by thescreen. The lower edge of the screen bears a a flap or apron s which ishinge'd to it extending downwardsoas to just'clearvthe top tube of the motor cycle frame :and is keptin the desired position "by a suitable strap :t.

n will be un derstood that the form 111a};-

tratedis shown by wayrof'exampleonly andniodifications may be made as convenient.

Having now described my invention what I claim as new anddesire tosecure byLetters Patent is j l. A wind and weather screen for the protection of the rider of a motor-cycle includ' ingin'combination a pivoted screen; a bearingmeinber rigid with the handle-barsof the motor-cycle upon which said screen can rock" said bearing member restrainingsaid 'rock-;

ing action to a transverse axis, and resilient means connecting said screen to the motorcycle Y U2. tection of the rider'o-f a'motor-cycle including in combination a pivoted-screen, a bear ing member rigid with the handle-hereof the motor-cycle upon which" said screen can ro- A wind and weather screen for thep'ro tate-,resilient means connecting saidscreen to a point on-the handle-bars and means for" adjusting the position of the range of resilient movement; I r

' 3. A WlDCl and-weather screenfor the protection of the rider of'a motor-cycle inchrd mg incomb'ination a pivoted screen, a '-bearinginember rigidwiththe handle-barsofthe motor-cycle upon which-said screen can "rotate, resilient means connecting said screen to themotor-cycle and a means for "adjusting the length of said resilient connection to allow such rotation of the screen as may be required for instance in emergency. 5 a Intestimony whereof I have signed my name to this specification,

'ARCHIBALD. comm CAMPBELL. I 

